I got my YDS150 yesterday!!!
First a quick word about me and why i got the YDS: i've been playing soprano for 2 years about. I needed a silent practice tool, particularly to be able to practice scales and articulation. And also intonation, which is notoriously hard on the soprano which i play.
First impressions were good in general. Of course, I'd much rather play my sop. The YDS150 is not a sax replacement. I changed the "key response" setting to 2 from a default of 10 almost immediately. Other than that, it looks good. There is not much in the manual, but it's worth reading it so you know how to adjust the custom settings.
They keywork is nice. It felt right at home and got used to the small changes from my normal instrument within the first evening of playing around. Accidentally touching the octave key, or the palm and side keys was a bit of a nuisance. As the keys are digital, there is no such thing as a half-open key. The left tumb rest is a bit small, leaving little space for my thumb between the octave key and the low A key (which works on all instruments btw, not just bari). There is no high G key 🙁. Overall the keywork is light. The YDS is thicker that the sop, so it feels more natural to keep the fingers on the keys. I don't miss the rollers, i think this has to do with the light keywork. Also, i seem to make the same mistakes on the real thing as i do with the YDS, which is a good thing, it means that technique translates well from one to the other. At least at my level. I don't know about players that can play very fast. As the keywork is quite "picky" about half-pressed keys, it will accentuate inaccuracy. I think it will clean up technique well.
Regarding breathing, the resistance is adjustable. And you feel some vibrations as it says in the specs. But resistance is uniform over the instrument, same if you play a low Bb or a high F#. And the notes sound the same no matter what your embouchure is like, or where you have your tongue, if you are keeping your throat open, blowing hot air rather than cold etc. If you want sub-tones, you'll have to select a different instrument, maybe the "tenor #4 breathy". Embouchure is my only fear with the YDS: too much of it could mess with my embouchure. For a sound to come out, of course you need to blow enough air through the horn (e-horn?), otherwise the notes won't sound at all. If breathing technique isn't there (or if you're hooting while being passed-out on your sofa) notes might start to disappear. More pressure means more volume, so you can press hard. The reed isn't going to close on you, that's for sure. And you can play pianissimo of course.
Articulation works nicely, I'm happy to report.
Vibrato is there by default on most sounds, but it is possible to remove it completely with a global setting. But the sound will be quite a bit more sterile. I set it to 1. Btw, this only works for the headphone output. Also, i'm playing a lot of classical music, so vibrato often fits nicely. But you can't do vibrato with your breath, and the joystick button on the back makes it sound very synth-like.
Speaking of sounds, i think they are OK, i can deal with them for practice. The neighbours (and family) will be particularly fond of the sound when i wear headphones! 😛 There are 56 sax sounds, sop, alto, tenor and bari. I only have a sop, so i'm looking forward to playing some tunes on the other instruments. Remember you can get rid of the vibrato if you want to.
The mouthpiece is alto-sized. It's plastic, so it doesn't feel too good in the mouth. A toothguard will make it much better. The reed is also plastic. I've never used a synthetic reed on my sop, but if it feels like this, it's never going to happen. As soon as the shops open, I'm getting an alto-sized Rico plasi-cover. They are made of cane and don't need moisting before use, so I'm hoping it will be a match made in heaven for the YDS.
Next: tuning. Of course it's in tune, it's a digital instrument! And you can tune it to 442 if that is what the maestro wants. I mention tuning because the real horn can easily honk out of tune at the extremes. I'm looking forward to training my ear with the YDS, hopefully i'll play more in tune with the sop without relying on the tuner so much.
Metronome. There isn't one. It's a pity, almost all synthesizers have one built-in, and it's practical to have it. I think Yamaha just didn't think about this unfortunately.
Cleaning is easy. The horn drips out the bottom, so you want to clean that brass bell. And the mouthpiece.
I think that's it. I hope this is helpful for anyone who is reading this thread.
Happy playing to all, i wish you good health and patience with the lockdown!